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switched to websafe color pallete, disabled number of colors input box for now

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This commit is contained in:
Antoni Sawicki 2019-06-06 00:15:36 -07:00
parent 26ad732d99
commit af3aef5c39
1 changed files with 7 additions and 3 deletions
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10
wrp.go
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@ -12,7 +12,9 @@ import (
"context"
"flag"
"fmt"
_ "image"
"image"
"image/color/palette"
"image/draw"
"image/gif"
"image/png"
"log"
@ -99,7 +101,7 @@ func pageServer(out http.ResponseWriter, req *http.Request) {
fmt.Fprintf(out, "W <INPUT TYPE=\"TEXT\" NAME=\"w\" VALUE=\"%d\" SIZE=\"4\"> \n", w)
fmt.Fprintf(out, "H <INPUT TYPE=\"TEXT\" NAME=\"h\" VALUE=\"%d\" SIZE=\"4\"> \n", h)
fmt.Fprintf(out, "S <INPUT TYPE=\"TEXT\" NAME=\"s\" VALUE=\"%1.2f\" SIZE=\"3\"> \n", s)
fmt.Fprintf(out, "C <INPUT TYPE=\"TEXT\" NAME=\"c\" VALUE=\"%d\" SIZE=\"3\"> \n", c)
//fmt.Fprintf(out, "C <INPUT TYPE=\"TEXT\" NAME=\"c\" VALUE=\"%d\" SIZE=\"3\"> \n", c)
fmt.Fprintf(out, "</FORM><BR>\n")
if len(u) > 1 {
if strings.HasPrefix(u, "http") {
@ -195,8 +197,10 @@ func capture(gourl string, w int64, h int64, s float64, co int, p int64, i bool,
fmt.Fprintf(out, "<BR>Unable to decode page screenshot:<BR>%s<BR>\n", err)
return
}
pm := image.NewPaletted(img.Bounds(), palette.WebSafe)
draw.FloydSteinberg.Draw(pm, img.Bounds(), img, image.ZP)
gifbuf.Reset()
err = gif.Encode(&gifbuf, img, &gif.Options{NumColors: co})
err = gif.Encode(&gifbuf, img, nil)
if err != nil {
log.Printf("%s Failed to encode GIF: %s\n", c, err)
fmt.Fprintf(out, "<BR>Unable to encode GIF:<BR>%s<BR>\n", err)